Muenzaniso weKufamba Kwemhepo

Mienzaniso miviri yeMibvunzo yeRolling Motion

1. Chinhu chine denderedzwa risina chinhu (I = mR)2) ichitenderera isina kutsvedza ichikwira ndege yakakombama ine kumhanya kwekutanga kwe10 m/s. Ndege yakakombama ine kona yekukwira yeθ ine tan θ = 0,75. Kana kukurumidza kunokonzerwa negiravhiti g = 10 m/s-2 uye kumhanya kwechinhu kunoderera kusvika 5 ms-1 ipapo daro rinofambwa nechinhu chakarerekera mudenga ndiro….
A. 12,5 m
B. 10 m
C. 7,5 m
D. 5 m
E. 2,5 m
Kukurukurirana
Zvinozivikanwa kuti:
Nguva yekusashanda kwe silinda isina chinhu (I) = m R2
Angle yekukwira kwenzvimbo yakatsamira = θ , uko tangent θ = 0,75 = 75/100 = kumberi / pasi
Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 4Chivi θ = kumberi/kumberi = 75/125 = 3/5 = 0,6
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Kumhanya kwekutanga (v)o) = 10 m/s
Kumhanya kwekupedzisira (v)t) = 5 m/s
Akabvunzwa: Nhambwe yakafambwa nechinhu chacho!
Mhinduro:
Verenga kukwirira kunosvikwa nesirinda uchishandisa fomura yemutemo wekuchengetedza simba remakanika:

VERENGA ZVIMWEWO  Muenzaniso wemudziyo wakabatana nepombi yakaita seU

Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 1

Kureba kwekutanga (h)o) = 0 mamita
Kumhanya kwekutanga (v)o) = 10 m/s
Kumhanya kwekupedzisira (v)t) = 5 m/s
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2

Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 2Sirinda inokwira kusvika pakakwirira mamita 7,5. Nhanho inofambiswa nesirinda ndeiyi:

Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 3

Nhambwe inofambwa necylinder iyi i12,5 metres.
Mhinduro chaiyo ndiA.

Tsananguro yefomura:
o = kutanga, t = yekupedzisira, EM = simba remakanika, EP = simba rinogona kuitika, EK = simba rekinetic, m = uremu, g = kukurumidza nekuda kwegiravhiti, h = kureba, v = kumhanya kwakatsetseka, ω = kumhanya kwekona, I = nguva yekusashanda, R = radius yesilinda

2. Sirinda yakasimba (I = ½ mR)2) ine huremu hwe3 kg ichitenderera isina kutsvedza, denderedzwa rakakombama rine kona yekukwira yeθ ine sin θ = 0,6. Kana kukurumidza kunokonzerwa negiravhiti g = 10 m/s-2 uye kumhanya kwekutanga kwechinhu chacho kuri 10 m/s, ipapo kureba kwenzira yakakombama iyo chinhu chacho chinofamba isati yamira ndekwekuti....
A. 9,5 mamita
B. 10,5 mamita
C. 11,5 mamita
D. 12,5 mamita
E. 13,5 mamita
Kukurukurirana
Zvinozivikanwa kuti:
Nguva yekusashanda kwe silinda yakasimba (I) = ½ m R2
Kukurukurirana kweMibvunzo yeFizikisi yeBvunzo yeNyika ya2014 yeZvikoro zveSenior High - Rolling Motion - 8 Kukurukurirana kweMibvunzo yeFizikisi yeBvunzo yeNyika ya2014 yeZvikoro zveSenior High - Rolling Motion - 8Huremu hwesirinda = 3 kg
Kumhanya kwekutanga (v)o) = 10 m/s
Kumhanya kwekupedzisira (v)t) = 0 m/s (chinhu chinomira)
Kona yekukwira kwendege yakatsamira (θ) = θ, apo sin θ = 0,6 = 6/10 = kumberi/kutsveyama
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Akabvunzwa: Kureba kwenzira yakafambwa nechinhu chisati chamira!
Mhinduro:
Verenga kukwirira kunosvikwa nesirinda uchishandisa fomura yemutemo wekuchengetedza simba remakanika:

VERENGA ZVIMWEWO  Kuchengetedza Data reDigital: Tekinoroji uye Kushanduka Kwaro

Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 5

Kureba kwekutanga (h)o) = 0 mamita
Kumhanya kwekutanga (v)o) = 10 m/s
Kumhanya kwekupedzisira (v)t) = 0 m/s (chinhu chinomira)
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2

Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 6

Silinda inokwira kusvika pakakwirira mamita 7,5.

Kureba kwakafambwa nesirinda:

Kukurukurirana kwemibvunzo yebvunzo yenyika yeSMA MA Physics yegore ra2014 - Rolling motion - 7

Nhambwe inofambwa necylinder iyi i12,5 metres.
Mhinduro chaiyo ndiD.

Kwakabva mubvunzo:

Mibvunzo yeNational Examination Physics yeChikoro Chesekondari/Chikoro Chepamusoro Chebasa

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